Predictors of participation in a telephone-based Acceptance and Commitment Therapy for smoking cessation study

BMC Public Health

Table 5 Summary of the logistic regression model in predicting participation (“ENTER” method is used)

Independent variables	Crude OR	(95 % CI)	Adjusted OR^a	(95 % CI)
Gender (ref = male)
Female	2.01	1.24–3.26**	1.00	0.34–2.93
Age (ref = 56 or above)
18–35	2.62	1.47–4.67**	2.02	0.59–6.92
36–55	1.86	1.14–3.02*	1.36	0.50–3.71
Employment status (ref = unemployed)
Currently employed	2.05	1.24–3.40**	0.99	0.32–3.04
With a current smoking partner (ref = no)
Yes	2.28	1.33–3.90**	2.71	0.80–9.15
Average cigarettes/day in past 1 month (ref = 1–20)
21 or above	1.86	1.02–3.39*	1.36	0.38–4.92
Nicotine dependence level (ref = low)^b
Medium	0.94	0.56–1.58	1.53	0.60–3.89
High	3.13	1.89–5.17***	3.75	1.25–11.23*
Length of abstinence in last attempt at quitting (ref = More than a month)
A month or less	2.84	1.63–4.93***	3.77	1.68–8.47**
Stages of change (ref = Pre-contemplation)
Contemplation	11.32	5.96–21.48***	7.86	2.90–21.30***
Preparation	26.55	13.98–50.42***	24.81	8.93–68.96***
Action	5.34	1.64–17.43**	2.85	0.62–13.18
Importance of quitting^c (mean = 60) (ref = more important)
Less important	0.40	0.26–0.61***	0.53	0.23–1.22
Difficulty in quitting^d (mean = 60) (ref = more difficult)
Less difficult	0.66	0.44–1.00*	1.31	0.59–2.89

*p < =.05, **p < =.01, ***p < =.001
OR odds ratio; CI confidence interval
Note: The numbers in italics are the significant results and their 95 % confidence intervals
^aAdjusted for all of the significant variables in the univariate analysis
^bMeasured by the Fagerstrom scale, which is divided into 3 levels: low (0–3), moderate (4–5), and high (6–10)
^c,dThese variables were classified as low versus high by placing the division at the mean value

ISSN: 1471-2458